The correct order of steps in Polymerase Chain Reaction (PCR) is:
1. Extension, Denaturation, Annealing
2. Annealing, Extension, Denaturation
3. Denaturation, Extension, Annealing
4. Denaturation, Annealing, Extension
1. Extension, Denaturation, Annealing
2. Annealing, Extension, Denaturation
3. Denaturation, Extension, Annealing
4. Denaturation, Annealing, Extension
A foreign DNA and plasmid cut by the same restriction endonuclease can be joined to form a recombinant plasmid using?
| 1. | Eco Rl | 2. | taq polymerase |
| 3. | polymerase lll | 4. | ligase |
Which of the following is not a component of downstream processing?
| 1. | Separation | 2. | Purification |
| 3. | Preservation | 4. | Expression |
DNA fragments are:
1. Negatively charged
2. Neutral
3. Either positively charged depending on their size
4. Positively charged
2. DNase I
3. RNase
4. Hind II
1. Circular structure
2. Transferable
3. Single-stranded
4. Independent replication
The introduction of t-DNA into plants involves?
1. Infection of the plant by Agrobacterium tumefaciens
2. Altering the pH of the soil, heat-shocking the plants
3. Exposing the plants to Cold for a brief period
4. Allowing the plant roots to stand in water
Which of the following is not correctly matched for the organism and its cell wall degrading enzyme?
1. Plant cells- cellulose
2. Algae - Methylase
3. Fungi - Chitinase
4. Bacteria - Lysozyme
DNA fragments generated by the restriction endonucleases in a chemical reaction can be separated by:
1. Polymerase chain reaction
2. Electrophoresis
3. Restriction mapping
4. Centrifugation
Which one of the following is a case of wrong matching?
| 1. | Somatic hybridization- Fusion of two diverse cells |
| 2. | Vector DNA- Site for tRNA synthesis |
| 3. | Micropropagation- In vitro production of plants in large numbers |
| 4. | Callus - Unorganized mass of cells produced in tissue culture |
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